1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.webdav.methods;
24  
25  import com.liferay.portal.kernel.util.GetterUtil;
26  import com.liferay.portal.kernel.util.StringPool;
27  import com.liferay.portal.webdav.WebDAVException;
28  import com.liferay.portal.webdav.WebDAVRequest;
29  import com.liferay.portal.webdav.WebDAVStorage;
30  import com.liferay.portal.webdav.WebDAVUtil;
31  
32  import javax.servlet.http.HttpServletRequest;
33  import javax.servlet.http.HttpServletResponse;
34  
35  import org.apache.commons.logging.Log;
36  import org.apache.commons.logging.LogFactory;
37  
38  /**
39   * <a href="UnlockMethodImpl.java.html"><b><i>View Source</i></b></a>
40   *
41   * @author Alexander Chow
42   *
43   */
44  public class UnlockMethodImpl implements Method {
45  
46      public int process(WebDAVRequest webDavRequest) throws WebDAVException {
47          WebDAVStorage storage = webDavRequest.getWebDAVStorage();
48  
49          String token = getToken(webDavRequest.getHttpServletRequest());
50  
51          if (!storage.isSupportsClassTwo()) {
52              return HttpServletResponse.SC_METHOD_NOT_ALLOWED;
53          }
54  
55          if (storage.unlockResource(webDavRequest, token)) {
56              return HttpServletResponse.SC_NO_CONTENT;
57          }
58          else {
59              return HttpServletResponse.SC_PRECONDITION_FAILED;
60          }
61      }
62  
63      protected String getToken(HttpServletRequest request) {
64          String token = StringPool.BLANK;
65  
66          String value = GetterUtil.getString(request.getHeader("Lock-Token"));
67  
68          if (_log.isInfoEnabled()) {
69              _log.info("\"Lock-Token\" header is " + value);
70          }
71  
72          if (value.startsWith("<") && value.endsWith(">")) {
73              value = value.substring(1, value.length() - 1);
74          }
75  
76          int index = value.indexOf(WebDAVUtil.TOKEN_PREFIX);
77  
78          if (index >= 0) {
79              index += WebDAVUtil.TOKEN_PREFIX.length();
80  
81              if (index < value.length()) {
82                  token = GetterUtil.getString(value.substring(index));
83              }
84          }
85  
86          return token;
87      }
88  
89      private static Log _log = LogFactory.getLog(UnlockMethodImpl.class);
90  
91  }